Set tcp_keepalive=True in s3 connection

Another patch to try to mitigate cloudferro issue

Patch to mitigate cloudferro issue

Apply patch from copernicusmarine toolbox (see mercator-ocean/copernicus-marine-toolbox@v2.2.1...v2.2.2) to mds-toolobx

The path aim to mitigate: https://marine.copernicus.eu/user-corner/user-notification-service/mdsop-310-security-limits-error-429-too-many-requests

Support python 3.9

2.0.1

Allow use of python 3.9 (#7)

Update to copernicus marine toolbox 2.1.2

MdsToolbox now use latest version of copernicus marine toolbox

First Release of mds-toolbox

First stable release of mds-toolbox based on Copernicus Marine Toolbox 1.x